AirHint found the following cheapest return flights from Birmingham (BHX) to Bangkok (DMK) in September 2025 (see full year).

Return flights

21 Sep - 28 Sep	Pegasus Airlines
30 Sep - 14 Oct	Aer Lingus
27 Sep - 04 Oct	Pegasus Airlines
28 Sep - 05 Oct	Pegasus Airlines
22 Sep - 29 Sep	Pegasus Airlines
22 Sep - 13 Oct	Pegasus Airlines
22 Sep - 09 Oct	Pegasus Airlines
24 Sep - 01 Oct	Ryanair
20 Sep - 27 Sep	Pegasus Airlines
26 Sep - 14 Oct	Ryanair
24 Sep - 29 Oct	Pegasus Airlines
22 Sep - 03 Oct	Pegasus Airlines
20 Sep - 23 Sep	Pegasus Airlines
27 Sep - 10 Oct	Turkish Airlines
21 Sep - 29 Sep	Turkish Airlines
19 Sep - 20 Sep	easyJet
23 Sep - 29 Sep	Emirates
20 Sep - 26 Sep	Lufthansa
19 Sep - 28 Sep	Qatar Airways
21 Sep - 30 Sep	Emirates

Also check the deals for one-way flights from Birmingham to Bangkok in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Birmingham to Bangkok in September from $754

Return flights